This complete 2.5mm oversize valve kit gives M8 builders everything needed for a proper valve job in a single package — no sourcing parts separately, no compatibility guesswork. The kit pairs Victory 2.5mm oversize stainless-steel intake and exhaust valves with titanium custom retainers, billet top lock locks, PSI springs rated to .650 lift, and valve seals. Whether you're refreshing a high-mileage top end or building for performance, this kit delivers the components and the confidence to do it right.
 
What's Included:
Victory 2.5mm oversize stainless-steel intake & exhaust valves
Titanium custom retainers
PSI valve springs (rated to .650 lift)
Billet single groove top lock locks
Valve seals
 
Fitment: Milwaukee-Eight 2017–2026
 
Complete kit — valves, retainers, springs, locks, and seals included; no separate sourcing required
2.5mm oversize stainless steel valves — improved flow and durability over stock
Titanium custom retainers — reduced reciprocating mass for high-rpm reliability
PSI springs rated to .650 lift — headroom for aggressive cam profiles without spring bind
Billet single groove top lock locks — precision machined for secure, consistent valve retention